You have to find the common fractions
Answer:
B
Step-by-step explanation:
A geometric sequence has a common ratio r between consecutive terms
r = = = ...
= 2
= 2
= 2
There is a common ratio of 2 between consecutive terms.
Hence sequence is geometric → B
Answer:
x = -4/7
Step-by-step explanation:
y = -7x
4 = -7x
Switch Sides
-7x = 4
Divde both sides by -7
-7x/-7 = 4/-7
Simplify
x = -4/7
Using the formula for area of a circle: area = pi x r^2
You now have:
225pi ft^2 = pi x r^2
Divide both sides by pi:
225 = r^2
Take the square root of both sides:
r = 15
The radius is 15 feet.
The diameter is the radius x 2:
Diameter = 15 x 2 = 30 feet.
Answer: 30 feet.